From Miles and Wood’s About Time, vol. 3, p. 23, discussing the fictional British space programme:
… the logical place for launch and landing would have been as close to the Equator as possible, perhaps British Colombia [sic] or Uganda.
I suspect they mean British Honduras, now Belize. The southern end of British Columbia is closer to the Equator than the mainland of the UK, but not by very much!
[ETA: as
Chris ‘Deadbeat/Kingpin’ Jury was up for the role of the Doctor itself in 1987, or so I’ve read. Greatest Show was my favourite of that season when it went out – and while I enjoyed Remembrance it doesn’t manage to convey a sense of period, partly because there are too many 1980s buildings and cars about.